Primer and idler



Jan. 11, 1949. w. R. s. MlLLS I 2,458,999

PRIMER AND IDLER Filed Nov. 9, 1945 LINEFROM 7 W.

FUELPUMP T L To MRBUR K To INrAKE MA N/FOLU Patented Jan. 11, 1949UNITED STATES PATENT j 2,458,999 r I Q i PRIMER AND IDLER Will R.StMillS, Grystal, Okla). Application November 9, 1945, SerialNo. 627,753

1 (Claim; (01. its-46.5)

This invention relates to a primer and idler for gasoline engines, andthe like, and has for one of its objects the production of a simple andeflicient means for connectionwith a downdraft carburetor to provide areserve supply of fuel which may be conveniently fed to the carburetorin the event that the engine should fail to start.

A further object of this invention is the production of a simple andeflicient means for filling a reserve tank with fuel while the engine isoperating so that this reserve supply of fuel may be used subsequentlyto start the engine.

Other objects and advantages of the present invention will appearthroughout the following specification and claims. I

In the drawing:

Figure 1 is a side elevational view of the primer and idler;

Figure 2 is an enlarged longitudinal sectional view, certain parts beingshown in elevation;

Figure 3 is a top plan view of the vented cap of the reserve tank.

By referring to the drawing, it will be seen that It! desi nates ahollow coupling one end of which is adapted to be connected to the fuelpump of a gasoline engine and the other end to a carburetor, asindicated in Figure 1. A joint II is also connected to the hollowcoupling H] by means of a connecting pipe 12, which pipe l2 extendsvertically relative to the coupling Ill. The joint II is provided with alongitudinal bore l3 extending from end to end and having a valve seatI4 intermediate the ends thereof for receiving the needle valve l5 tocontrol the flow of gasoline or other fuel through the seat I4 whendesired, by the adjustment of the valve [5. The bore l3 communicateswith the hollow pipe l2 which pipe l2 forms a communication between thebore l3 and the hollow coupling 10, as shown in Figure 2. The bore l3also communicates with the hollow pipe l6 which is connected to the endof the joint ll opposite the needle valve IS.

A hollow metal or other bowl I! is supported above the joint H by ahollow stand-pipe l8 forming a communication with the bore l3 and valveseat l4 with the bowl IT, The bowl I1 is provided with an upstandingthreaded neck l9, upon which is threaded a vent cap 20 having a ventaperture 2|. A gasket 22 fits between the cap 20 and the upper end ofthe neck I9 surrounding the area of the vent 2|. The vent 2| maytherefore lie opened or closed by adjusting'the cap upon the neck l9relative to the gasket 22, such for instance, by turning the cap 20 uponthe screw threads of the threaded neck I9.

The outer end of the pipe 1615 connected to a vertical joint or casing23 having a bore or channel 24 which communicates with the bore 25 inthe pipe l6; A vertically adjustable needle valve 26 controls thepassage of fuel through the bore 24 by its'movement toward or away fromthe valve seat 21, which seat is located in the bore 24. The lower endof the bore 24 communicates with the intake manifold of the engine andalso communicates with the windshield wiper through the hollow nipple28.

The present device is adapted to be connected to the fuel line or fuelpump and to a downdraft carburetor of a gasoline engine. As the gasolineengine is started, the bowl I! fills quickly with gasoline, the valve [5being open and the vent cap 20 also being loosened to open the vent 2|.When the bowl Il'is full of fuel, the vent cap 20 is tightened orsecured to close the vent 2| and the bowl will retain the fuel at alltimes if the fuel line is air-tight. If the fuel line is not tight thevalve I5 is adjusted to close on the seat 14 to prevent fuel fromleaking from the bottom of the bowl ll. This may be done whether theengine is in operation or not to insure the retention of a full bowl offuel.

Should the engine fail to start, for lack of obtaining sufiicient fuelthrough the fuel line and carburetor, the operator may simply open thevalve [5, if it is closed, and unscrew the vent cap 20' to provide aproper vent for the bowl H. The supply of filtered fuel which has beenstored in the bowl I! from the fuel pump, about one-half pint, will flowby gravity to the carburetor by way of the pipe 18, bore I3, pipe 12,and coupling ID. A suitable communication is provided between the intakemanifold and the windshield wiper through the coupling or casing 23 andpipe 16 from the joint II.

If the priming pump of the engine is not operating, the valve 26 may beopened to prime the intake manifold and may be kept open to permit theengine to idle while cold and until the engine warms up, when the valvemay be closed to permit normal operation.

From the foregoing description it will be seen that a simple andefficient means has been provided for priming and facilitating thestarting of a gasoline engine, should the engine fail to start due tothe fact that the engine is cold or because of the lack of fuel beingfed through the carburetor and intake manifold, It should be understoodthat the present device will prime the fuel-line and the carburetor, itbeing necessary to open the vent cap 20 and valve 15. The priming is Adevice of the class described comprising a reservoir adapted to containliquid fuel, a hollow carburetor and fuel pump coupling, a jointcoupling forming a communication between the reservoir and the firstmentioned coupling, an intake manifold connection, a pipe forming acommunication between the intake manifold connection and the jointcoupling, a valve for closing the intake manifold connection, a valvefor closing the communication between reservoir and the joint coupling,and a normally sealed rotatable vent cap carried by the reservoir andhaving a vent opening which is adapted to be opened when 4 the cap isrotated in one direction and closed when the cap is rotated in anopposite direction to control the flow of liquid fuel from the reservoirand to hold the fuel within the reservoir when desired.

WILL R. S. MILLS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,296,229 Tampier Mar. 4, 19191,404,152 Kettering Jan. 17, 1922 1,448,752 Kopf Mar. 20, 1923 1,617,868Skaggs Feb. 15, 1927 2,088,316 Alvarez July 27, 1937 2,103,516 DempseyDec. 28, 1937 2,215,680 Wiley et a1. Sept. 24, 1940 2,389,685 Pike Nov.27, 1945 FOREIGN PATENTS Number Country Date 438,854 Germany Dec. 28,1926

